package 笔试.春招2022.Y2022贝壳找房.T1;

import java.util.Arrays;

public class Solution {
    public String NS_String (String s, int k) {
        if(s==null||s.length()==0){
            return "";
        }

        char[] charArray = s.toCharArray();

        Arrays.sort(charArray);
        String str = s;



        return str;
    }
}